BOS - MSO

$216 Find Cheap Flights from Boston to Missoula - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Missoula departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$431
Typical prices: $395-$584
Delta
Wed 9/23Wed 9/30
BOS - MSO • 1 stop
Cheapest one-way
$216
Typical prices: $216-$350
United Airlines
Tue 9/29
BOS - MSO • 1 stop
Top airlines
Cheapest • from $431 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Boston and Missoula. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $594 (round-trip)
Shortest trip • 7h 57m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 17% compared to booking last minute.
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When to travel
Cheapest • 31% price drop
Most popular
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Missoula (BOS-MSO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Missoula that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Missoula

Wed, Sep 23 - Wed, Sep 30
Delta Logo
6:05 am - 12:37 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
8h 32m1 stop Salt Lake City
Delta Logo
6:17 pm - 6:30 amMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
10h 13m1 stop Salt Lake City
$431Delta
Mon, Jan 18 - Mon, Jan 18
Delta Logo
6:00 am - 12:36 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
8h 36m1 stop Salt Lake City
Delta Logo
6:10 pm - 6:11 amMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
10h 01m1 stop Salt Lake City
$431Delta
Wed, Sep 23 - Wed, Sep 30
American Airlines Logo
6:00 am - 12:55 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
8h 55m1 stop Chicago O'Hare Intl
American Airlines Logo
12:45 pm - 11:54 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
9h 09m1 stop Chicago O'Hare Intl
$431American Airlines
Tue, Sep 29 - Mon, Oct 26
American Airlines Logo
7:00 am - 12:56 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
7h 56m1 stop Chicago O'Hare Intl
American Airlines Logo
1:48 pm - 11:36 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
7h 48m1 stop Chicago O'Hare Intl
$431American Airlines
Wed, Nov 4 - Wed, Nov 11
Delta Logo
3:15 pm - 7:54 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
6h 39m1 stop Minneapolis St Paul
Delta Logo
1:25 pm - 11:59 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
8h 34m1 stop Salt Lake City
$431Delta
Tue, Nov 10 - Sat, Nov 14
Alaska Airlines Logo
7:10 am - 3:34 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
10h 24m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:55 pm - 11:59 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
8h 04m1 stop Seattle/Tacoma Intl
$437Alaska Airlines
Tue, Nov 10 - Sat, Nov 14
Alaska Airlines Logo
7:13 am - 3:27 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
10h 14m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:55 pm - 11:58 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
8h 03m1 stop Seattle/Tacoma Intl
$437Alaska Airlines
Wed, Oct 28 - Sun, Nov 1
American Airlines Logo
7:00 am - 12:35 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
7h 35m1 stop Chicago O'Hare Intl
American Airlines Logo
1:10 pm - 10:45 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
7h 35m1 stop Chicago O'Hare Intl
$450American Airlines
Tue, Sep 29 - Mon, Oct 26
United Airlines Logo
10:51 am - 9:32 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
12h 41m2 stops Newark Denver Intl
United Airlines Logo
2:37 pm - 11:50 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
7h 13m1 stop Denver Intl
$466United Airlines
Wed, Aug 26 - Mon, Aug 31
United Airlines Logo
9:35 am - 4:20 pmBOS  Boston Logan Intl-MSO Missoula Johnson-Bell Field
8h 45m1 stop Denver Intl
United Airlines Logo
6:15 am - 7:19 pmMSO  Missoula Johnson-Bell Field-BOS Boston Logan Intl
11h 04m2 stops Denver Intl Chicago O'Hare Intl
$542United Airlines
Booking Insights

KAYAK's insights & trends for Boston to Missoula flights

Get data-powered insights and trends into flights from Boston to Missoula to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to Missoula?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Missoula departing in November.

Flight prices are below average for this route right now.

Flights to Missoula from Boston usually cost between $550 and $676 in November.
The lowest price found in the past 5 days was $431 on Delta (Nov 4-Nov 11).

What is the cheapest month to fly from Boston to Missoula?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Missoula, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Missoula is February, where tickets cost $382 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $734 and $705 respectively.

How far in advance should I book a flight from Boston to Missoula?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Missoula, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Missoula, you should book around 3 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

October

Cheapest flight

$216
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from Boston to Missoula

When to book flights from Boston to Missoula

Are your dates flexible? Find out the best times to travel from Boston to Missoula based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Missoula

  • What is the cheapest flight from Boston to Missoula?

    In the last 5 days, the lowest price for a flight from Boston to Missoula was $216 for a one-way ticket and $431 for a round-trip.

  • Do I need a passport to fly between Boston and Missoula?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Boston to Missoula?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Missoula?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Boston and Missoula, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Missoula, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Missoula are Alaska Airlines and Delta. With an average price for the route of $483 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $621 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Boston to Missoula?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Missoula.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Missoula?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Missoula from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Missoula?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Missoula with an airline and back to Boston with another airline. Booking your flights between Boston and MSO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Missoula?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Missoula from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boston to Missoula

 
See real verified KAYAK customer reviews for airlines flying from Boston to Missoula. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Missoula? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12786 reviews
7.0Entertainment
8.5Crew
8.1Boarding
7.8Comfort
7.0Food
Airline reviews

It was delayed seven hours and we did not take it

2.0 MediocreAnonymous, Aug 2026
Read more Alaska Airlines reviews

It was delayed seven hours and we did not take it

The delays were the real problem. The crew and staff were amazing and kept us informed and taken care of but what should have been a 6 hour flight with 1.5 hour wait ended up being a 13 hour day in the airport and in the plane waiting to board then waiting for takeoff. Great flight once we got in the air. Pilots and flight crew were awesome 😎.

The flight boarded and landed on time. There were frequent snacks & beverages, The pilot spoke in a clear calm voice, The leg room was cramped and there were no screens (entertainment) on this long ~6 hr. flight.

The flight was direct, anytime a flight is on time, and there's not a layover that risk yet another delay is a win!!

We had the bulkhead seats in back of the first class section and there was a rigid plastic barrier which made it very hard to get in and out of our seats. We paid extra for the bulkhead and got neither extra room nor he's getting up. We were very disappointed.

Didn’t even get on, check my flight to Seattle for details. Do better Alaska.

Nice to get moved from a middle seat to an aisle seat upon request, but why wasn’t I put in an aisle seat to begin with? The flight was not full.

I liked that it didn't take 10 hours to drive here. Super short trip!

another delayed flight. no one at the desk kept us updated. we found out by an email as the desk was not even staffed up to expected takes off

The flight was delayed due to staff shortage and they efficiently fixed the problem with only 20 minutes delay time. All went smoothly (especially the landing) and passengers were great. Best job landing ever - never felt a bump!

Although I know the Airlines cannot control the situation when there’s a ground stoppage, it would’ve been nicer if we would have had more up-to-date information clarity around the delays. Additionally, I think the delays also took a toll on the Cabin crew, particularly the lead flight attendant in first class. She was not very friendly when we boarded the plane for many of the passengers. Number one she refused to hang a garment bag in the front closet for a first class passenger, she was unwilling to dispose of an empty bottle in the trash as I was boarding (despite drinking a bottle of water herself and needing to disregard), and she was very combative with a passenger, who needed to access something from his bag that was Gate checked. Frankly, it was really unfortunate as I’ve never seen a flight attendant behave that way directly to the passengers, particularly when none of us had done anything wrong.

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

It is usually very pleasant. Good service for the price, international flights are even better

Flight attendant was very poor in taking care or showing attention. I slept up front for a few and missed the snacks. She saw me many times, went by me many times and never once asked if I needed anything. The whole 2 hours flight. And this is to a Diamond member in first.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

Flight was 2.5 late. Maybe not United’s fault but late none the less. We were late as well on the first leg. WiFi quit working with an hour left.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

The flight was delayed, they didn’t even have water for the toilets or for drinks

It’s always a great time flying with united airlines.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The flight was delayed in 30 minute increments for a total of 4 hours and 30 minute delay. All other flights to Chicago left on time except for this one flight. If there is an issue with the inbound flight, just let customers know so they can find another flight right away, Once we got on the plane there was another 30 minute delay taking off at 10:30 at night which is very unusual that a flight wouldn't be ready to take off

It was a 3 hour flight from Dallas to Missoula. The aircraft did not have power plugs, internet or in-flight entertainment. When boarding, one flight attendant was "somewhere in the airport" so delayed the boarding process (not coming from another flight) although we did take off on time and landed early. In flight there was little to no service - we got the standard beverage but no real connection with the crew which feels unusual for a 3 hour flight. A passenger needed help stowing her bag and got no assistance, and actually some passive aggressive comments from the flight attendants about "she needs to remove the extender" and "she'll have to find a place for it". I have seen others be helpful and put a bag in the closet, or support assistance as the boarding door was already closed. Just not a great experience considering the cost of my round trip ticket {$1000}.

They have overselled the ticket and kicked me out from boarding, All my Plans were collapsed and important network meeting missed.also I booked direct flight i have to go through an 1 stop and it was frustrated.

Horrific. We were delayed due a flight attendant stuck in traffic en route to the airport. Over 100 people were then stuck in Charolette. Then I ran to make my layover only to find that my connection didn’t have a plane anymore. Waited 2.5 hours without any updates. On the flight we had to beg for even a pretzel option.

Terrible boarding and first class experience. Nice staff but overall disorganized, dirty plane.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Great experience. Good dinner and service. FA's were very nice and attentive.

Everything you need to know for your flight from Boston to Missoula

Information on your arrival and departure airports